installer change license file encoding utf-8 to windows-1252

J have license file in html format (utf-8 encoded).

my package.xml include it, ex:
<Licenses>
<License name="My license" file="license.html" />
</Licenses>

 

license.html is write in utf-8 and has header:
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>

After instalation license.html file located in Licenses subdirectory has
changed the encoding from utf8 to windows-1252.

J loook to source code and I found someting that in licenseoperation.cpp
 
{{bool LicenseOperation::performOperation(){
...for (QVariantMap::const_iterator it = licenses.constBegin(); it != licenses.constEnd(); ++it)

{ QFile file(targetDir + QLatin1Char('/') + it.key()); .... QTextStream stream(&file); stream << it.value().toString(); }

}}}

Text is converted to default encoding system in this palce:

QTextStream stream(&file);stream << it.value().toString();
 

but my license is in html format, it can not be converted to default
system text encoding.